Digital Logic — question 4 of 10
Write a real answer. It is graded against the question's rubric, and the mastery movement is computed by the same engine the product uses. Scoring here is deterministic rather than model-written, so this page costs nothing to run and nothing is saved. In a track built from your own posting, the same rubric is graded by the model, which is what produces feedback about your reasoning rather than about coverage.
Basic mixed-voltage interfacing is a very common early mistake, and reasoning about it requires understanding logic thresholds and device ratings rather than memorizing a spec sheet.
You have a microcontroller GPIO output running at 5V logic levels driving directly into the input pin of a separate chip that is specified to run at 3.3V. The system powers up and seems to work for a few minutes, then the 3.3V chip starts behaving erratically and eventually stops responding. What's the likely cause, and what would you check or change?